package com.hxx.day5example.service;

import com.hxx.day5example.domain.Emp;

import java.io.File;
import java.util.List;

public interface EmpService {

    File findById(Long id);

    void save(Emp emp);

    void update(Emp emp);

    void delete(Long id);

    List<Emp> findAll();
}




















